/*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) version 3.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with the program; if not, see <http://www.gnu.org/licenses/>
*
*
* Authors:
* Jeffrey Stedfast <fejj@novell.com>
*
* Copyright (C) 1999-2008 Novell, Inc. (www.novell.com)
*
*/
#include <config.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <pthread.h>
#ifdef HAVE_LIBGNOMEUI_GNOME_THUMBNAIL_H
#include <libgnomeui/gnome-thumbnail.h>
#endif
#include <gtk/gtk.h>
#include "e-icon-factory.h"
#include "e-util-private.h"
#include "art/broken-image-16.xpm"
#include "art/broken-image-24.xpm"
#define d(x)
typedef struct {
char *name;
GdkPixbuf *pixbuf;
} Icon;
static GdkPixbuf *broken16_pixbuf = NULL;
static GdkPixbuf *broken24_pixbuf = NULL;
static GHashTable *name_to_icon = NULL;
static GtkIconTheme *icon_theme = NULL;
static GStaticMutex mutex = G_STATIC_MUTEX_INIT;
/* Note: takes ownership of the pixbufs (eg. does not ref them) */
static Icon *
icon_new (const char *name, GdkPixbuf *pixbuf)
{
Icon *icon;
icon = g_slice_new (Icon);
icon->name = g_strdup (name);
icon->pixbuf = pixbuf;
return icon;
}
static void
icon_free (Icon *icon)
{
g_free (icon->name);
if (icon->pixbuf)
g_object_unref (icon->pixbuf);
g_slice_free (Icon, icon);
}
static Icon *
load_icon (const char *icon_key, const char *icon_name, int size, int scale)
{
GdkPixbuf *pixbuf, *unscaled = NULL;
char *basename, *filename = NULL;
if (g_path_is_absolute (icon_name))
filename = g_strdup (icon_name);
else {
GtkIconInfo *icon_info;
icon_info = gtk_icon_theme_lookup_icon (
icon_theme, icon_name, size, 0);
if (icon_info != NULL) {
filename = g_strdup (
gtk_icon_info_get_filename (icon_info));
gtk_icon_info_free (icon_info);
}
}
if (!filename || !(unscaled = gdk_pixbuf_new_from_file (filename, NULL))) {
if (scale) {
const char *dent;
int width;
GDir *dir;
char *x;
if (!(dir = g_dir_open (EVOLUTION_ICONSDIR, 0, NULL))) {
goto done;
}
/* scan icon directories looking for an icon with a size >= the size we need. */
while ((dent = g_dir_read_name (dir))) {
if (!(dent[0] >= '1' && dent[0] <= '9'))
continue;
if (((width = strtol (dent, &x, 10)) < size) || *x != 'x')
continue;
if (((strtol (x + 1, &x, 10)) != width) || *x != '\0')
continue;
/* if the icon exists in this directory, we can [use/scale] it */
g_free (filename);
basename = g_strconcat (icon_name, ".png", NULL);
filename = g_build_filename (EVOLUTION_ICONSDIR,
dent,
basename,
NULL);
g_free (basename);
if ((unscaled = gdk_pixbuf_new_from_file (filename, NULL)))
break;
}
g_dir_close (dir);
} else {
gchar *size_x_size;
size_x_size = g_strdup_printf ("%dx%d", size, size);
basename = g_strconcat (icon_name, ".png", NULL);
g_free (filename);
filename = g_build_filename (EVOLUTION_ICONSDIR,
size_x_size,
basename,
NULL);
g_free (basename);
g_free (size_x_size);
unscaled = gdk_pixbuf_new_from_file (filename, NULL);
}
}
done:
g_free (filename);
if (unscaled != NULL) {
if(gdk_pixbuf_get_width(unscaled) != size || gdk_pixbuf_get_height(unscaled) != size)
{
pixbuf = e_icon_factory_pixbuf_scale (unscaled, size, size);
g_object_unref (unscaled);
} else
pixbuf = unscaled;
} else {
pixbuf = NULL;
}
return icon_new (icon_key, pixbuf);
}
static GtkIconSize
e_icon_size_to_gtk_icon_size (guint size)
{
switch (size) {
case E_ICON_SIZE_MENU:
return GTK_ICON_SIZE_MENU;
case E_ICON_SIZE_BUTTON:
return GTK_ICON_SIZE_BUTTON;
case E_ICON_SIZE_SMALL_TOOLBAR:
return GTK_ICON_SIZE_SMALL_TOOLBAR;
case E_ICON_SIZE_LARGE_TOOLBAR:
return GTK_ICON_SIZE_LARGE_TOOLBAR;
case E_ICON_SIZE_DND:
return GTK_ICON_SIZE_DND;
case E_ICON_SIZE_DIALOG:
return GTK_ICON_SIZE_DIALOG;
default:
g_assert_not_reached ();
}
}
static void
icon_theme_changed_cb (GtkIconTheme *icon_theme, gpointer user_data)
{
g_hash_table_remove_all (name_to_icon);
}
/**
* e_icon_factory_init:
*
* Initialises the icon factory.
**/
void
e_icon_factory_init (void)
{
gchar *path;
if (name_to_icon != NULL)
return;
name_to_icon = g_hash_table_new_full (
g_str_hash, g_str_equal,
(GDestroyNotify) NULL,
(GDestroyNotify) icon_free);
icon_theme = gtk_icon_theme_get_default ();
path = g_build_filename (EVOLUTION_DATADIR,
"evolution",
BASE_VERSION,
"icons",
NULL);
gtk_icon_theme_append_search_path (icon_theme, path);
g_free (path);
g_signal_connect (
icon_theme, "changed",
G_CALLBACK (icon_theme_changed_cb), NULL);
broken16_pixbuf = gdk_pixbuf_new_from_xpm_data (
(const char **) broken_image_16_xpm);
broken24_pixbuf = gdk_pixbuf_new_from_xpm_data (
(const char **) broken_image_24_xpm);
}
/**
* e_icon_factory_shutdown:
*
* Shuts down the icon factory (cleans up all cached icons, etc).
**/
void
e_icon_factory_shutdown (void)
{
if (name_to_icon == NULL)
return;
g_hash_table_destroy (name_to_icon);
g_object_unref (broken16_pixbuf);
g_object_unref (broken24_pixbuf);
name_to_icon = NULL;
}
/**
* e_icon_factory_get_icon_filename:
* @icon_name: name of the icon
* @size: MENU/SMALL_TOOLBAR/etc
*
* Looks up the icon to use based on name and size.
*
* Returns the requested icon pixbuf.
**/
char *
e_icon_factory_get_icon_filename (const char *icon_name, int icon_size)
{
GtkIconInfo *icon_info;
char *filename;
gint width, height;
g_return_val_if_fail (icon_name != NULL, NULL);
g_return_val_if_fail (strcmp (icon_name, ""), NULL);
if (icon_size >= E_ICON_NUM_SIZES) {
g_critical (
"calling %s with unknown icon_size value (%d)",
G_STRFUNC, icon_size);
/* if ((icon_size = pixel_size_to_icon_size (icon_size)) == -1)*/
return NULL;
}
if (! gtk_icon_size_lookup_for_settings (gtk_settings_get_default (),
e_icon_size_to_gtk_icon_size (icon_size),
&width, &height))
return NULL;
d(g_message ("Size is %d", icon_size));
d(g_message ("looking up %s at %dx%d", icon_name, width, height));
g_static_mutex_lock (&mutex);
icon_info = gtk_icon_theme_lookup_icon (
icon_theme, icon_name, height, 0);
if (icon_info != NULL) {
filename = g_strdup (
gtk_icon_info_get_filename (icon_info));
gtk_icon_info_free (icon_info);
} else
filename = NULL;
g_static_mutex_unlock (&mutex);
return filename;
}
/**
* e_icon_factory_get_icon:
* @icon_name: name of the icon
* @icon_size: size of the icon (one of the E_ICON_SIZE_* enum values)
*
* Returns the specified icon of the requested size (may perform
* scaling to achieve this). If @icon_name is a full path, that file
* is used directly. Otherwise it is looked up in the user's current
* icon theme. If the icon cannot be found in the icon theme, it falls
* back to loading the requested icon from Evolution's icon set
* installed from the art/ srcdir. If even that fails to find the
* requested icon, then a "broken-image" icon is returned.
**/
GdkPixbuf *
e_icon_factory_get_icon (const char *icon_name, int icon_size)
{
GdkPixbuf *pixbuf;
char *icon_key;
Icon *icon;
int size, width, height;
if (icon_size >= E_ICON_NUM_SIZES) {
g_critical (
"calling %s with unknown icon_size value (%d)",
G_STRFUNC, icon_size);
/*if ((icon_size = pixel_size_to_icon_size (icon_size)) == -1) */
return NULL;
}
if (! gtk_icon_size_lookup_for_settings (gtk_settings_get_default (),
e_icon_size_to_gtk_icon_size (icon_size),
&width, &height))
return NULL;
d(g_message ("Size is %d", icon_size));
d(g_message ("looking up %s at %dx%d", icon_name, width, height));
size = height;
if (icon_name == NULL || !strcmp (icon_name, "")) {
if (size >= 24)
return gdk_pixbuf_scale_simple (broken24_pixbuf, size, size, GDK_INTERP_NEAREST);
else
return gdk_pixbuf_scale_simple (broken16_pixbuf, size, size, GDK_INTERP_NEAREST);
}
icon_key = g_alloca (strlen (icon_name) + 7);
sprintf (icon_key, "%dx%d/%s", size, size, icon_name);
g_static_mutex_lock (&mutex);
if (!(icon = g_hash_table_lookup (name_to_icon, icon_key))) {
icon = load_icon (icon_key, icon_name, size, TRUE);
g_hash_table_insert (name_to_icon, icon->name, icon);
}
if ((pixbuf = icon->pixbuf)) {
g_object_ref (pixbuf);
} else {
if (size >= 24)
pixbuf = gdk_pixbuf_scale_simple (broken24_pixbuf, size, size, GDK_INTERP_NEAREST);
else
pixbuf = gdk_pixbuf_scale_simple (broken16_pixbuf, size, size, GDK_INTERP_NEAREST);
}
g_static_mutex_unlock (&mutex);
return pixbuf;
}
/**
* e_icon_factory_pixbuf_scale
* Scales pixbuf to desired size.
* @param pixbuf Pixbuf to be scaled.
* @param width Desired width, if less or equal to 0, then changed to 1.
* @param height Desired height, if less or equal to 0, then changed to 1.
* @return Scaled pixbuf.
**/
GdkPixbuf *
e_icon_factory_pixbuf_scale (GdkPixbuf *pixbuf, int width, int height)
{
g_return_val_if_fail (pixbuf != NULL, NULL);
if (width <= 0)
width = 1;
if (height <= 0)
height = 1;
#ifdef HAVE_LIBGNOMEUI_GNOME_THUMBNAIL_H
/* because this can only scale down, not up */
if (gdk_pixbuf_get_width (pixbuf) > width && gdk_pixbuf_get_height (pixbuf) > height)
return gnome_thumbnail_scale_down_pixbuf (pixbuf, width, height);
#endif
return gdk_pixbuf_scale_simple (pixbuf, width, height, GDK_INTERP_BILINEAR);
}
